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Title SLS OPERATIONAL PERFORMANCE WITH THIRD HARMONIC SUPERCONDUCTING SYSTEM
Type Poster operating experience
Abstract Within the framework of the S3HC project, two identical cryomodules, one for SLS and one for ELETTRA, were developed at CEA Saclay. Each cryomodule contains a third harmonic superconducting RF system consisting of two passive 1500 MHz Nb/Cu single-cell cavities. At the SLS the commissioning of the cavity in the bunch lengthening mode took successfully place end of August 2002, becoming the nominal mode of operation of the storage ring. The measurement made at SLS shows bunch lengthening up to a factor of 3 and a lifetime increase greater than a factor 2. The additional Landau damping, generated at high harmonic voltage by the increased non-linearity of the global RF voltage, allows stable top-up operation at the maximum design current of 400 mA. The commissioning and the operational results obtained with this system are reported here.

List of authors...

Principle author first.

Last (Family) Name First Name (Initials only) Affiliation or Organization (abbreviations if possible)
Pedrozzi M. PSI
Raguin J.-Y. PSI
Gloor W. PSI
Anghel A. EPFL-CRPP
Marchand P. SOLEIL
Bosland P. CEA-SACLAY
Bredy P. CEA-SACLAY
Chel S. CEA-SACLAY
Devanz C. CEA-SACLAY
Svandrlik M. ELETTRA
Penco G. ELETTRA
Craievich P. ELETTRA
Fabris A. ELETTRA
Pasotti C. ELETTRA
Chiaveri E. CERN
Losito R. CERN
Aberle O. CERN
Marque S. CERN



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